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參數(shù)資料
| 型號(hào)： | LM4970 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | LED驅(qū)動(dòng)器 |
| 英文描述： | Audio Synchronized Color LED Driver |
| 中文描述： | 音頻同步彩色LED驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 5/15頁 |
| 文件大小： | 726K |
| 代理商： | LM4970 |
External Components Description
Components
1.
Functional Description
C
i
This is the input coupling capacitor. It blocks the DC voltage and couples the input signal to the
amplifier’s input terminals. C
IN
also creates a highpass filter with an internal 20k
resistor at f
c
=
1/(2
π
.20000.C
i
).
This is the supply bypass capacitor. It filters the supply voltage applied to the V
DD
pin and helps
reduce the noise at the V
DD
pin.
This capacitor creates a low pass filter with an internal 4k
resistor at f
c
= 1/(2
π
*4000*C
filt
). This pole
set at f
c
determines the high cutoff frequency for the low band PWM color LED driver output, LED1.
2.
C
S
3.
C
filt
Typical Performance Characteristics
(Note 11)
Audio Sync LED Frequency Response
(Left - lowband, Mid - midband, Right - highband)
(Cfilt = 0.047μF, HPF = 3.5kHz setting)
Audio Sync LED Frequency Response
(Left - lowband, Mid - midband, Right - highband)
(Cfilt = 0.068μF, HPF = 3.5kHz setting)
20121265
20121266
Audio Sync LED Frequency Response
(Left - lowband, Mid - midband, Right - highband)
(Cfilt = 0.1μF, HPF = 3.5kHz setting)
Audio Sync LED Frequency Response
(Left - lowband, Mid - midband, Right - highband)
(Cfilt = 0.22μF, HPF = 3.5kHz setting)
20121267
20121268
L
www.national.com
5
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4970SD | 功能描述:LED照明驅(qū)動(dòng)器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LM4970SD/NOPB | 功能描述:LED照明驅(qū)動(dòng)器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LM4970SD/NOPB | 制造商:Texas Instruments 功能描述:IC, LED DRIVER, BOOST, LLP-10 |
| LM4970SDBD | 功能描述:音頻 IC 開發(fā)工具 LM4970 EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
| LM4970SDX | 功能描述:LED照明驅(qū)動(dòng)器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
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